/* ===========================
   NAV — PROJECT PAGES
=========================== */

/* Nelle pagine progetto il logo è sempre visibile */
.logo-nav {
    opacity: 1;
}

.nav-back {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    transition: color 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-back:hover {
    color: #ffffff;
}

.nav-back::before {
    content: '←';
    font-size: 16px;
}

/* ===========================
   PROJECT HERO
=========================== */
.project-hero {
    height: 70vh;
    position: relative;
    overflow: hidden;
}

.project-hero img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.7;
}

.project-hero-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 60px;
    background: linear-gradient(0deg, rgba(0, 0, 0, 1) 0%, rgba(0, 0, 0, 0) 60%);
}

.project-category {
    font-size: 11px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 16px;
}

.project-title-hero {
    font-size: 80px;
    font-weight: 900;
    letter-spacing: -4px;
    text-transform: uppercase;
    line-height: 1;
}

/* ===========================
   PROJECT CONTENT
=========================== */
.project-content {
    max-width: 900px;
    margin: 0 auto;
    padding: 80px 40px;
}

.project-info-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    margin-bottom: 80px;
    padding-bottom: 60px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.info-item label {
    display: block;
    font-size: 10px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.4);
    margin-bottom: 8px;
}

.info-item span {
    font-size: 15px;
    font-weight: 500;
}

.project-description {
    font-size: 20px;
    font-weight: 300;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 60px;
}

/* ===========================
   VIDEO THUMBNAIL
   (usato in basim.html)
=========================== */
.video-thumbnail-link {
    display: block;
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 60px;
}

.video-thumbnail-link img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: opacity 0.3s ease;
}

.video-thumbnail-link:hover img {
    opacity: 0.7;
}

.play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 68px;
    height: 48px;
    pointer-events: none;
    transition: transform 0.2s ease, opacity 0.2s ease;
    opacity: 0.9;
}

.video-thumbnail-link:hover .play-button {
    transform: translate(-50%, -50%) scale(1.1);
    opacity: 1;
}

/* ===========================
   GALLERY
=========================== */
.project-gallery {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-bottom: 80px;
}

.project-gallery img {
    width: 100%;
    aspect-ratio: 16/10;
    object-fit: cover;
    border-radius: 4px;
}

.project-gallery img.full {
    grid-column: 1 / -1;
}

/* ===========================
   VIDEO EMBED
=========================== */
.project-video {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 80px;
}

.project-video iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

iframe {
    aspect-ratio: 16 / 9;
    width: 100%;
    margin-bottom: 60px;
}

/* ===========================
   BACK BOTTOM
=========================== */
.back-bottom {
    text-align: center;
    padding: 60px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.back-bottom a {
    color: rgba(255, 255, 255, 0.5);
    text-decoration: none;
    font-size: 12px;
    letter-spacing: 2px;
    text-transform: uppercase;
    transition: color 0.3s ease;
}

.back-bottom a:hover {
    color: #ffffff;
}

/* ===========================
   RESPONSIVE
=========================== */
@media (max-width: 768px) {
    nav {
        padding: 20px 30px;
    }

    .project-hero-overlay {
        padding: 30px;
    }

    .project-title-hero {
        font-size: clamp(32px, 8vw, 60px);
        letter-spacing: -2px;
    }

    .project-info-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .project-gallery {
        grid-template-columns: 1fr;
    }
}